Luxim's new bulb may only be the size of a Tic-Tac, but this little bugger can crank out way more light at 250 watts than a traditional 400 watt LED. It can achieve this feat thanks to gas that is heated inside the bulb via electrical energy delivered to it by a "puck." As the gas turns to plasma, the bulb is illuminated. However, since most of the energy is not lost to heat, the light can reach a high level of brightness. In fact, it can produce up to 140 lumens per watt which is twice that of an LED and around 10 times that of a standard bulb. Impressive. Hit the link to see the light in action. [CNET and Luxim]